/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package enterprise.web_jpa_war.servlet;

import enterprise.web_jpa_war.entity.Adherent;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.NoResultException;
import javax.persistence.PersistenceUnit;
import javax.persistence.Query;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author jeddi
 */
@WebServlet(name = "Connexion", urlPatterns = {"/Connexion"})
public class Connexion extends HttpServlet {

     @PersistenceUnit
    private EntityManagerFactory emf;
    
    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        
        EntityManager em = null;
        try {
            em = emf.createEntityManager();
            // Requête de base
            String name = request.getParameter("login");
            String password = request.getParameter("password");
            String query = "select a from Adherent a where a.nom=:login and a.mdp=:password";
            Query emQuery = em.createQuery(query);
            
            
            emQuery.setParameter("login", name);
            emQuery.setParameter("password", password);
            
            // Exécuter la requête
            Adherent ad = (Adherent)(emQuery.getSingleResult());
            
            // Afficher le résultat
            request.setAttribute("resultAuth",ad);
            request.getRequestDispatcher("Connexion.jsp").forward(request, response);
            
        } 
        catch (NoResultException nrex) {
            request.setAttribute("resultAuth", null);
            request.getRequestDispatcher("Connexion.jsp").forward(request, response);
        }
        catch (Exception ex) {
            throw new ServletException(ex);
        } finally {
            if(em != null) {
                em.close();
            }
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
